更多"[单选题]民用机载应急电台的工作频率为（ ）。"的相关试题:
[单选题]应急电台的工作频率是（ ）。
A.118MHz~136.975MHz
B.2MHz~30MHz
C.121.5MHz和243MHz
D.118Mhz和136.975MHz
[单选题]有效的应急电台的电池必须保证应急电台能连续工作（ ）。
A.24小时以上
B.48小时以上
C.15天以上
D.30天以上
[单选题]已知甚高频电台工作频率范围是118MHz～136.975MHz，该电台可提供25KHz频率间隔的信道总数是（）。
A.(136.975MHz－118MHz)/25KHz
B.(136.975MHz－118MHz)/25KHz＋1
C.(136.975MHz－118MHz)/25KHz＋2
D.(136.975MHz－118MHz)/25KHz－1
[单选题]
某甚高频电台工作频率范围是118MHz～136.975MHz，
该电台可提供25kHz频率间隔的信道总数是____。
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[判断题]各地地空数据链系统RGS站电台工作频率可根据本地频率资源进行更改，无需固定。（ ）
A.正确
B.错误
[判断题]VHF电台的频率漂移量与只与发射机工作时间长短有关，与工作温度无关。
A.正确
B.错误
[单选题]应急电台应安装在飞机的（ ）
A.在垂直尾翼之前的尽可能靠后处
B.前电子设备舱
C.主电子设备舱
D.前乘务员与驾驶舱之间
[单选题]应急电台的自备干电池应（ ）。
A.初装5年以后，每隔2年检查一次
B.初装5年以后，每隔1年检查一次
C.初装3年以后，每隔2年检查一次
D.初装3年以后，每隔1年检查一次
[单选题]A330-300飞机上还有一套固定应急发报机系统。是三频率电台,这些频率是国际民航组织通用遇难时发出求救信号的频率。
A.是
B.否
[单选题]项目应急演练开展频率为( )
A.每月一次
B.每半年一次
C.每季度一次
D.每年一次
[单选题]A330-2飞机上还有一套固定应急发报机系统。是三频率电台，这些频率是国际民航组织通用遇难时发出求救信号的频率。
A.是
B.否
[单选题]在飞机发生事故时，利用应急电台（ ）。
A.可提供近程视距双向通信
B.进行通话
C.发出呼救信号
D.可进入远程移动通讯网
[单选题]应急电台自备新电池的有效期是（ ）。
A.1年之内
B.2年之内
C.5年之内
D.5年以上
[单选题]应急定位发射机是在飞机遇险后，向外界发出救生信号时使用的。三频率电台的发射频率为121.5MHz、( ) 和406MHz。
A.243MHz
B.224MHz
C.245MHz
D.304MHz
[单选题]实验室人员进行应急演习的频率。
A.A、每年至少一次
B.B、每年至少两次
C.C、每年至少三次
D.D、每年至少四次
E.E、以上都不是
[单选题]无线列调系统中，A制式、B制式车站电台设备频率配置不少于（ ）个工作频组。
A.8
B.6
C.4
D.2
